Paint brush



FIG. 1 is a front view of the instant invention with the rear view being a mirror image thereof;

FIG. 2 is a left side view of the paint brush of the subject invention with the right side view being a mirror image thereof;

FIG. 3 is a top view of the paint brush of the instant invention; and,

FIG. 4 is a bottom view of the subject invention. 

The ornamental design for a paint brush, as shown and described. 